Continental Automotive Gmbh

Continental Automotive France

Stephan Baudru

Maxime Cordier

Olivier Elie

Cyril Robin

Xavier Hourne

Joel Carniaux

Method of searching for a variation in capacitance of a capacitive sensor, includes a phase of searching for variation in capacitance and, when a capacitance variation has been detected, a phase of verifying the variation in capacitance. The search phase includes a recurrent step of searching for variation in capacitance including steps of measuring the duration of a first measurement sequence and determining, according to the measured duration, whether a first predefined detection criterion for variation in capacitance is verified. The verification phase includes steps of measuring the duration of a second measurement sequence and determining, according to the measured duration, whether a second predefined detection criterion for variation in capacitance is verified. The first measurement sequence has a reference duration less than that of the second measurement sequence, and the verification phase includes, when the second detection criterion is not verified, a step of updating the first detection criterion.

Method for searching a capacitance variation of a capacitive sensor of a motor vehicle

Disclosed is a lighting device (D') on a motor vehicle, including: at least one light source (D, D, D, D) controlled by a pulse-width modulated lighting signal (PWM&#x2032;); and a body controller module () generating the lighting signal (PWM&#x2032;) linked to the light source and, to at least one sensor () detecting the approach and/or contact of the user's hand. The device includes a switching element (S, S, S, S) located between the detection sensor and the light source. The detection sensor includes: receiving and a processing element () of the lighting signal; and a control element () of the switching element, linked electrically firstly to the receiving and processing element, and secondly to the light source via the switching element. Also disclosed is a method for controlling the light source.

On-board lighting device in a motor vehicle and related method for controlling a light source

Method for communication between an electronic module and a sensor having a light source and being supplied by supply line, the electronic module measuring the modulations of the intensity of the current in the line. The sensor drives a gradual turning on/turning off of the light source by a first modulation of the intensity of the current such that: the light source is turned off, respectively turned on, when the intensity of the current is in a low, respectively high, state, and the light source illuminates, respectively turns off, when the duty ratio of the intensity of the current varies from the high state to the low state and vice versa. During detection, the sensor dispatches a second modulation through the light source, however if the light source is turning on (or off), this is interrupted and the intensity of current is forced to the high (or low) state.

Device and method for communication between an electronic module and a detection sensor in the presence of a light source

Method for determining spurious contacts on a contact detection sensor for a handle of an automobile door, the sensor defining a locking area and being connected to an onboard electronic locking and unlocking system, includes:

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Pins Justaret, France

Stephan Baudru